GIMP (GNU Image Manipulation Program) is a long-standing open-source alternative to commercial image editors. It covers photo retouching, compositing, digital painting, and batch processing. You install it locally and extend it with plugins, brushes, and scripts.
If you want Photoshop-level control without paying for Adobe’s subscription, GIMP is one of the strongest free options. It’s especially useful for students, hobbyists, developers, and small teams that need solid editing tools but don’t want vendor lock-in. You keep full control of your files, and the open-source ecosystem gives you flexibility.
You work inside a classic layer-based editor with tools for selections, masks, cloning, color correction, filters, transformations, and scripted automation (Python-fu). You can add third-party plugins for things like RAW support, AI upscaling, and advanced brushes.
